v1.0.2 (2026-04-12)

- 🗑️ 删除交易记录功能：支持删除误添加的交易记录，自动回滚账户余额和持仓变化
- 💰 显示货币选择器：支持 CNY/USD/HKD 三种货币显示，默认 CNY
- 🔄 实时货币转换：根据汇率自动转换总资产显示

README.md

@@ -181,6 +181,9 @@ npx prisma db seed
 
 # 5. 启动开发服务器
 npm run dev
+
+# 6. 重置数据库
+npx prisma migrate reset --force
 ```
 
 ### 环境变量
@@ -382,6 +385,12 @@ MIT License - 详见 [LICENSE](LICENSE) 文件
 
 ## 更新日志
 
+### v1.0.2 (2026-04-12)
+
+- 🗑️ 删除交易记录功能：支持删除误添加的交易记录，自动回滚账户余额和持仓变化
+- 💰 显示货币选择器：支持 CNY/USD/HKD 三种货币显示，默认 CNY
+- 🔄 实时货币转换：根据汇率自动转换总资产显示
+
 ### v1.0.1 (2026-04-12)
 
 - 🔧 账户名称优化：改为港股账户、美股账户、A股账户、加密货币账户

src/app/api/transactions/route.ts

@@ -134,3 +134,87 @@ export async function POST(request: Request) {
     return NextResponse.json({ error: 'Failed to create transaction' }, { status: 500 })
   }
 }
+
+// 删除交易记录
+export async function DELETE(request: Request) {
+  try {
+    const { searchParams } = new URL(request.url)
+    const id = searchParams.get('id')
+
+    if (!id) {
+      return NextResponse.json({ error: 'Transaction ID is required' }, { status: 400 })
+    }
+
+    // 获取交易记录
+    const transaction = await prisma.transaction.findUnique({
+      where: { id },
+    })
+
+    if (!transaction) {
+      return NextResponse.json({ error: 'Transaction not found' }, { status: 404 })
+    }
+
+    // 开启事务处理回滚
+    await prisma.$transaction(async (tx) => {
+      // 如果是入金/出金，反向更新账户余额
+      if (transaction.type === 'DEPOSIT' || transaction.type === 'WITHDRAW') {
+        const balanceChange = transaction.type === 'DEPOSIT'
+          ? new Prisma.Decimal(transaction.amount).negated()
+          : new Prisma.Decimal(transaction.amount)
+        await tx.account.update({
+          where: { id: transaction.accountId },
+          data: { balance: { increment: balanceChange } },
+        })
+      }
+
+      // 如果是买入/卖出，反向更新持仓
+      if ((transaction.type === 'BUY' || transaction.type === 'SELL') && transaction.symbol && transaction.quantity && transaction.price) {
+        const position = await tx.position.findUnique({
+          where: { accountId_symbol: { accountId: transaction.accountId, symbol: transaction.symbol } },
+        })
+
+        if (position) {
+          if (transaction.type === 'BUY') {
+            // 撤销买入：减少持仓数量
+            const newQty = position.quantity.minus(new Prisma.Decimal(transaction.quantity))
+            if (newQty.lte(0)) {
+              // 持仓全部撤销，删除记录
+              await tx.position.delete({
+                where: { accountId_symbol: { accountId: transaction.accountId, symbol: transaction.symbol } },
+              })
+            } else {
+              // 按比例撤销平均成本
+              const undoCost = new Prisma.Decimal(transaction.quantity).times(new Prisma.Decimal(transaction.price))
+              const remainingCost = position.averageCost.times(position.quantity).minus(undoCost)
+              const newAvgCost = remainingCost.div(newQty)
+              await tx.position.update({
+                where: { accountId_symbol: { accountId: transaction.accountId, symbol: transaction.symbol } },
+                data: { 
+                  quantity: newQty,
+                  averageCost: newAvgCost,
+                },
+              })
+            }
+          } else if (transaction.type === 'SELL') {
+            // 撤销卖出：恢复持仓数量
+            const newQty = position.quantity.plus(new Prisma.Decimal(transaction.quantity))
+            await tx.position.update({
+              where: { accountId_symbol: { accountId: transaction.accountId, symbol: transaction.symbol } },
+              data: { quantity: newQty },
+            })
+          }
+        }
+      }
+
+      // 删除交易记录
+      await tx.transaction.delete({
+        where: { id },
+      })
+    })
+
+    return NextResponse.json({ success: true })
+  } catch (error) {
+    console.error('Delete transaction error:', error)
+    return NextResponse.json({ error: 'Failed to delete transaction' }, { status: 500 })
+  }
+}

src/app/page.tsx

@@ -21,7 +21,7 @@ import {
 } from 'lucide-react'
 import { 
   fetchAccounts, fetchTransactions, fetchPositions,
-  fetchSecurities, createTransaction, formatCurrency, formatPercent, 
+  fetchSecurities, createTransaction, deleteTransaction, formatCurrency, formatPercent, 
   marketLabels, transactionTypeLabels
 } from '@/lib/api'
 import { Account, Position, Transaction, MarketType, TransactionType, Security } from '@/types'
@@ -77,6 +77,20 @@ interface AnalyticsSummary {
   positionCount: number
 }
 
+// 货币转换函数（以 USD 为基准）
+const EXCHANGE_RATES: Record<string, number> = {
+  USD: 1,
+  CNY: 7.24,  // 1 USD = 7.24 CNY
+  HKD: 7.78,  // 1 USD = 7.78 HKD
+}
+
+function convertCurrency(amount: number, from: string, to: string): number {
+  if (from === to) return amount
+  // 先转换为 USD，再转换为目标货币
+  const usdAmount = amount / EXCHANGE_RATES[from]
+  return usdAmount * EXCHANGE_RATES[to]
+}
+
 // 主页面组件
 export default function Dashboard() {
   // 状态定义
@@ -97,6 +111,13 @@ export default function Dashboard() {
   const [importFile, setImportFile] = useState<File | null>(null)
   const [importData, setImportData] = useState<ImportTransaction[]>([])
   
+  // 显示货币状态（默认 CNY）
+  const [displayCurrency, setDisplayCurrency] = useState<'CNY' | 'USD' | 'HKD'>('CNY')
+  
+  // 交易记录删除状态
+  const [transactionToDelete, setTransactionToDelete] = useState<Transaction | null>(null)
+  const [showDeleteTxDialog, setShowDeleteTxDialog] = useState(false)
+  
   // 交易表单状态
   const [txForm, setTxForm] = useState({
     type: 'BUY' as TransactionType,
@@ -253,6 +274,27 @@ export default function Dashboard() {
     setShowDeleteDialog(true)
   }
 
+  // 打开删除交易记录对话框
+  const openDeleteTxDialog = (tx: Transaction) => {
+    setTransactionToDelete(tx)
+    setShowDeleteTxDialog(true)
+  }
+
+  // 删除交易记录
+  const handleDeleteTransaction = async () => {
+    if (!transactionToDelete) return
+    
+    try {
+      await deleteTransaction(transactionToDelete.id)
+      toast.success('交易记录已删除')
+      setShowDeleteTxDialog(false)
+      setTransactionToDelete(null)
+      loadData()
+    } catch (error) {
+      toast.error('删除交易记录失败')
+    }
+  }
+
   // 重置交易表单
   const resetTxForm = () => {
     setTxForm({
@@ -412,6 +454,17 @@ export default function Dashboard() {
             <h1 className="text-xl font-bold">投资持仓管理</h1>
           </div>
           <div className="flex items-center gap-2">
+            {/* 显示货币选择 */}
+            <Select value={displayCurrency} onValueChange={(v) => setDisplayCurrency(v as 'CNY' | 'USD' | 'HKD')}>
+              <SelectTrigger className="w-[100px]">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="CNY">CNY ¥</SelectItem>
+                <SelectItem value="USD">USD $</SelectItem>
+                <SelectItem value="HKD">HKD $</SelectItem>
+              </SelectContent>
+            </Select>
             {/* 账户选择下拉框 */}
             <Select value={selectedAccountId} onValueChange={(v) => v && setSelectedAccountId(v)}>
               <SelectTrigger className="w-[140px]">
@@ -460,13 +513,13 @@ export default function Dashboard() {
           {/* 总资产卡片 */}
           <Card className="bg-gradient-to-br from-blue-600 to-blue-700 text-white border-0">
             <CardHeader className="flex flex-row items-center justify-between pb-2">
-              <CardTitle className="text-sm font-medium opacity-90">总资产 (USD)</CardTitle>
+              <CardTitle className="text-sm font-medium opacity-90">总资产 ({displayCurrency})</CardTitle>
               <Wallet className="h-4 w-4 opacity-80" />
             </CardHeader>
             <CardContent>
-              <div className="text-2xl font-bold">{formatCurrency(analytics?.summary?.totalMarketValue || 0)}</div>
+              <div className="text-2xl font-bold">{formatCurrency(convertCurrency(analytics?.summary?.totalMarketValue || 0, 'USD', displayCurrency), displayCurrency)}</div>
               <p className="text-xs opacity-80 mt-1">
-                成本 {formatCurrency(analytics?.summary?.totalCostBasis || 0)}
+                成本 {formatCurrency(convertCurrency(analytics?.summary?.totalCostBasis || 0, 'USD', displayCurrency), displayCurrency)}
               </p>
             </CardContent>
           </Card>
@@ -478,7 +531,7 @@ export default function Dashboard() {
               <TrendingUp className="h-4 w-4 opacity-80" />
             </CardHeader>
             <CardContent>
-              <div className="text-2xl font-bold">{formatCurrency(analytics?.summary?.totalPnL || 0)}</div>
+              <div className="text-2xl font-bold">{formatCurrency(convertCurrency(analytics?.summary?.totalPnL || 0, 'USD', displayCurrency), displayCurrency)}</div>
               <p className={`text-xs mt-1 flex items-center gap-1 ${(analytics?.summary?.totalPnL || 0) >= 0 ? 'text-emerald-200' : 'text-red-200'}`}>
                 {(analytics?.summary?.totalPnL || 0) >= 0 ? <ArrowUpRight className="h-3 w-3" /> : <ArrowDownRight className="h-3 w-3" />}
                 {formatPercent(analytics?.summary?.totalPnLPercent || 0)}
@@ -493,7 +546,7 @@ export default function Dashboard() {
               <DollarSign className="h-4 w-4 opacity-80" />
             </CardHeader>
             <CardContent>
-              <div className="text-2xl font-bold">{formatCurrency(analytics?.summary?.totalMarketValue || 0)}</div>
+              <div className="text-2xl font-bold">{formatCurrency(convertCurrency(analytics?.summary?.totalMarketValue || 0, 'USD', displayCurrency), displayCurrency)}</div>
               <p className="text-xs opacity-80 mt-1">{analytics?.summary?.positionCount || 0} 个持仓</p>
             </CardContent>
           </Card>
@@ -680,6 +733,7 @@ export default function Dashboard() {
                       <TableHead className="text-right">价格</TableHead>
                       <TableHead className="text-right">金额</TableHead>
                       <TableHead>账户</TableHead>
+                      <TableHead className="w-[50px]"></TableHead>
                     </TableRow>
                   </TableHeader>
                   <TableBody>
@@ -715,10 +769,15 @@ export default function Dashboard() {
                             <span className="text-sm">{tx.account?.name}</span>
                           </div>
                         </TableCell>
+                        <TableCell>
+                          <Button variant="ghost" size="sm" onClick={() => openDeleteTxDialog(tx)}>
+                            <Trash2 className="h-4 w-4 text-destructive" />
+                          </Button>
+                        </TableCell>
                       </TableRow>
                     )) : (
                       <TableRow>
-                        <TableCell colSpan={7} className="text-center py-8 text-muted-foreground">
+                        <TableCell colSpan={8} className="text-center py-8 text-muted-foreground">
                           暂无交易记录
                         </TableCell>
                       </TableRow>
@@ -1049,6 +1108,54 @@ export default function Dashboard() {
         </DialogContent>
       </Dialog>
 
+      {/* 删除交易记录确认对话框 */}
+      <Dialog open={showDeleteTxDialog} onOpenChange={setShowDeleteTxDialog}>
+        <DialogContent className="sm:max-w-sm">
+          <DialogHeader>
+            <DialogTitle>确认删除交易记录</DialogTitle>
+          </DialogHeader>
+          {transactionToDelete && (
+            <div className="py-4 space-y-3">
+              <div className="bg-muted/50 p-3 rounded-lg space-y-2">
+                <div className="flex justify-between text-sm">
+                  <span className="text-muted-foreground">类型</span>
+                  <span className="font-medium">{transactionTypeLabels[transactionToDelete.type]}</span>
+                </div>
+                {transactionToDelete.symbol && (
+                  <div className="flex justify-between text-sm">
+                    <span className="text-muted-foreground">证券</span>
+                    <span className="font-mono">{transactionToDelete.symbol}</span>
+                  </div>
+                )}
+                <div className="flex justify-between text-sm">
+                  <span className="text-muted-foreground">金额</span>
+                  <span className="font-mono font-medium">{formatCurrency(parseFloat(transactionToDelete.amount), transactionToDelete.currency)}</span>
+                </div>
+                <div className="flex justify-between text-sm">
+                  <span className="text-muted-foreground">时间</span>
+                  <span className="text-sm">{new Date(transactionToDelete.executedAt).toLocaleString('zh-CN')}</span>
+                </div>
+              </div>
+              <div className="text-sm text-destructive text-center">
+                确定要删除此交易记录吗？此操作将回滚相关账户余额和持仓变化
+              </div>
+            </div>
+          )}
+          <DialogFooter className="gap-2 sm:gap-0">
+            <Button variant="outline" onClick={() => {
+              setShowDeleteTxDialog(false)
+              setTransactionToDelete(null)
+            }}>
+              取消
+            </Button>
+            <Button variant="destructive" onClick={handleDeleteTransaction}>
+              <Trash2 className="h-4 w-4 mr-1" />
+              确认删除
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
       {/* 删除持仓确认对话框 */}
       <Dialog open={showDeleteDialog} onOpenChange={setShowDeleteDialog}>
         <DialogContent className="sm:max-w-sm">

src/lib/api.ts

@@ -62,6 +62,14 @@ export async function createTransaction(data: {
   return res.json()
 }
 
+// 删除交易记录
+export async function deleteTransaction(id: string): Promise<void> {
+  const res = await fetch(`${API_BASE}/transactions?id=${id}`, {
+    method: 'DELETE',
+  })
+  if (!res.ok) throw new Error('Failed to delete transaction')
+}
+
 // 持仓 API
 export async function fetchPositions(accountId?: string): Promise<Position[]> {
   const searchParams = accountId ? `?accountId=${accountId}` : ''